package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.BaseException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

/**
 * 类描述：
 */
@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setMealMapper;
    @Autowired
    private CategoryMapper categoryMapper;

    /**
     * 新增分类
     * @param categoryDTO
     */
    @Override
    public void saveCategory(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);
//        category.setCreateTime(LocalDateTime.now());
//        category.setUpdateTime(LocalDateTime.now());
//        category.setCreateUser(BaseContext.getCurrentId());
//        category.setUpdateUser(BaseContext.getCurrentId());
        category.setStatus(StatusConstant.ENABLE);
        categoryMapper.saveCategory(category);
    }

    /**
     * 分类分页查询
     * @param dto
     * @return
     */
    @Override
    public PageResult page(CategoryPageQueryDTO dto) {
        PageHelper.startPage(dto.getPage(), dto.getPageSize());
        Page<Category> p = categoryMapper.page(dto.getName(), dto.getType());
        return new PageResult(p.getTotal(), p.getResult());
    }

    /**
     * 根据id删除分类
     * @param id
     */
    @Override
    public void deleteById(Long id) {
        if(categoryMapper.status(id) == 1){
            throw new BaseException(MessageConstant.SETMEAL_ON_SALE);
        }
        if (dishMapper.countByCategory(id) != 0) {
            throw new BaseException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        if (setMealMapper.countByCategory(id) != 0) {
            throw new BaseException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.deleteById(id);
    }

    /**
     * 根据id查询分类
     * @param id
     * @return
     */
    @Override
    public Category getById(Long id) {
        Category category = categoryMapper.getById(id);
        return category;
    }

    /**
     * 修改分类
     * @param categoryDTO
     */
    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);
//        category.setUpdateTime(LocalDateTime.now());
//        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.update(category);
    }

    /**
     * 启用禁用分类
     * @param status
     * @param id
     */
    @Override
    public void updateStatus(Integer status, Long id) {
        Category category = Category.builder().status(status).id(id).updateTime(LocalDateTime.now()).updateUser(BaseContext.getCurrentId()).build();
        categoryMapper.update(category);
    }

    /**
     * 根据类型查询分类
     * @param type
     * @return
     */
    @Override
    public List<Category> list(Integer type) {
        List<Category> categorys = categoryMapper.list(type);
        return categorys;
    }
}
